Machine for the manufacture of crimping-forms



(No Model.) 2 Sheets-Sheet 1. J. W..-D. FIPIELD. MACHINE FOR THE MANUFACTURE OF GRIMPIN-G FORMS. No. 281,856.

Patented July 24, 1888.

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N Ptfcns Photmhthognphcr, Walhinglnn, D (L (No Model.) 2 Sheets-Sheet 2. J. W. D. PIFIELD. MACHINE FOR THE MANUFACTURE OF GRIMPING FORMS. No. 281,856.

Patented July 24, 1883.

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NITED STATES PATENT QFFIC Q JOHN w. n. FIFIELD, or NORTH nnooxrrnnn, MASSACHUSETTS? MACHINE FOR THE MANUFACTURE OF CRlMPlNG-FORMS.

SPECIFICATION formingpart of Letters Patent No. 281,856, dated July 24, 1883.

Application filed March 23, 1883. (No model.)

To all whom it may concern: Be it known that I, JOHN W. D. FIFIELD, of North Brookfield, county of Worcester, State of Massachusetts, have invented an Improvement in Machines for the Manufacture of Crimping-Forms, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts. V

The object of my invention is the production of amachine by which, at one operation, to cut wood into proper shape for crimpingforms. 7

Crimping-forms are now made by placing a piece of wood upon ahorizontal bed, through which is extended a rotary cutting-head having knives or blades the edges of which are shaped to correspond substantially with the edge of the form; but by machines such as now in use the front edge of the form cannot be beveled to a point, for the vertical edge of the piece of wood employed is used to run against a collar on the shaft containing the cutter-head. Further, in the machines now most generally in use, the wood for the form is presented to the cutter-head twice, first with one and then with the other side up. It has been attempted to so shapethe knives that the upper and lower edge of a piece of wood would be cut away at one operation, but in that case the edge of the wood, as it was obliged to be pressed against a guide-surface moving with the cutter, was not cut to an edge, and the edge of the form had to be subsequently finished to necessary shape. The machine devised by me contains a rotary cutter, a bed or frame having suitable ways to guide a main carriage, so that it may reciprocate on the said frame in the direction of the length of the crimpingform, and asec- 0nd or auxiliary carriage so supported therein as to be moved in a direction transverse, or nearly so, to the movement of the main carriage, whereby the foot part of the crimpingform may be so presented to the cutter-head as to enable the latter to follow the said foot from the toe to the leg. If crimping-forms of different sizes are to be made on the same machine, this auxiliary carriage, which serves as the support for the crimping-form, will .have

adjustably attached to it a holder for the wooden block which is to be fashioned to produce the crimpingform, and I have herein shown such holder as adapted to be adjusted to enable forms of different sizes to be made 011 the same machine. I have provided my machine with a pattern-plate to determinethe contour of the foot of the crimping-form, and, as herein shown, I have attached the said pattern to the auxiliary carriage, and to co-operate therewith I have employeda stud attached to a bracket connectedwith the bed of the ma chine and extended into the slot of the pattern; but a converse arrangement of parts might be employed instead. I have herein shown the auxiliary carriage as pivoted and made movable in the are of a circle the center of which is 011 the main carriage; but it is obvious that the said auxiliary carriage might be moved in a direction more nearly at right angles to the movement of the main carriage, the auxiliary carriage being in or under the control of suitable guides on the main carriage, without departing from my invention. I have also provided a carriage mover or pusher adapted to move first one and then both of the said carriages, as will be described.

My invention consists, essentially, in a rotary cutter-head, a main and connected auxiliary carriage to support the blank to be shaped for a crimping-form, and suitable means to move the auxiliary carriage, combined with a pattern-plate to regulate the line of movement of the foot part of the blank being operated upon with relation to the cutter to correctly shape the edge of the said foot part; also, in a rotary cutter, auxiliary carriage, patternplate, and pin or stud co-operating therewith, combined with the main carriage and with a carriage mover or pusher to operate both the auxiliary and main carriages, substantially as will be described; also, in a rotary cutter and the main and auxiliary carriages made movable with relation to the said cutter and each other, combined with an adjustable holdor to directly support the block to be made into a crimping-form, whereby forms of different sizes may be made 011. the same machine, substantially as will be described, also, in a main and auxiliary carriage and a pusher to move them, combined with a separable nut and rotating screw-shaft to operate the pusher at the proper times, substantially as will be set forth; also, in a main carriage and an auxiliary carriage made movable thereon, and a pattern-plate, combined with a rotary cutterhead,which ma 1 be moved backward and forward on the frame of the machine, substantially as and for the purposes described.

Figure 1, in side elevation, represents a machine embodying my invention; Fig. 2, a right-hand end view of the same 3 Fig. 3, a detail of the separable nut and means to operate it; Fig. 4, a section of Fig. 1 on the dotted line 00 00,- Fig. 5, a side elevation and crosssection of a completed crimping-form, shown as adapted for crimping boot-fronts. Fi 6 represents views of the pusher. Fig. 7 is a sectional detail on the liney, Fig. 1. Figs. 8

and 9 are cross-sections of crimping-forms in the conditions as heretofore left after having been acted upon by other machines employed anterior to my invention.

The stationary bed or frame-work A, of suitable shape to sustain the working parts of the machine, has two sets of guideways, A A shaped as common in lathes. The ways A receive a slide-plate, B, having a frame, B, provided with suitable adjustable boxes, B to receive the rotary shaft B, provided with a belt-pulley, B, and with a double cutter head, 0 0, each having two or more cutters or blades, 0", held in slots or throats therein in an adjustable manner by screws O", the inner and cutting edges of the said blades being shaped to correspond with the bevel 2 it is desired that the acting or front edge of the crimping-form shall have, as in the section Fig. 5. The slide-plate B and the rotary cutter-head C 0, carried by it, are made adjustable on the frame A through a bolt, B which enables the said cutter-head to be placed in proper position to operate upon a crimping-form of any desired size. The ways A receive, in usual manner, a carriage, D, denominatedthe main carriage, which, in accordance with my invention, supports an auxiliary carriage, E, herein shown as mounted on apivot or center stud, E, in an arm of the main carriage, the forward end of the auxiliary carriage having a slotted arm, E, engaged by a bolt, E, the head and body of the latter acting as a guide.

Secured to the lower edge of the auxiliary carriage is a pattern or pattern-plate, F, provided with a cam-slot c c c 0 which are so shaped as to determine the outline of the respective parts b b I) I) of the crimping-form. A pin or stud, G, on a bracket, G enters the slot in the pattern-plate. The wooden blank H,for the production of the crimping-form M, is shown as held by screws (1 (1, extended through ears (1 of the holder L, made adjustable on the auxiliary carriage E by reason of the bolts d and the slot (1, adjustment of the holder on the said carriage adjusting the machine for crimping-forms of different sizes, the nearer the holder L to the center E the smaller the crimping-form, and vice versa.

The framework A, at the rear side of the carriage D,has a suitable guideway for the reception of the carriage mover or pusher N, (shown in Fig. 6, and in Fig. lin dotted lines,) the said pusher having at its front end an incline e, and above it a shoulder, 6, both to act upon a pin or roller, 0 on a pin, a, attached to the inner side of the auxiliary carriage as the pusher is moved in the direction of the arrow 4 by the screw 0, having fixed bearings 5 6 and provided with a belt-pulley, O, by which to rotate it. The pusher N, at its inner side, is provided with a'vertical slot to receive above and below the screw 0 one half of a threaded separable nut, f f, each half being provided with a slot, f to receive one of the two pins f on a disk, f", provided with a hand-lever or handle, f", the said handle, disk, and pins constituting a nut-moving device.

The blank to be made into a crimping-form is sawed to resemble in outline substantially the shape that the form is to have, and my machine will fully complete the outline and bevel the sawed edge from each side toward its center, thus making a tapered or sharp edge, as shown in Fig. 5. The cutter-head, as herein shown, will commence to operate upon the block H at the point 8, the parts be* ing substantially as in Fig. 1, with the two halves of the separable nut closed upon the screw O,which is kept in continuous rotation. The rotation of the screwOimmediately starts the pusher N in the direction of the arrow 4, causing the incline e to act on the roll 0 and move the auxiliary carriage E in the direction of the arrow 10 and toward the rotating cutter-head O O, and at the same time the slot of the pattern-plate F, co-operating with the relatively-fixed pin or stud G, will cause the auxiliary carriage, and with it the main carriage D, to move horizontally for such a distance and in such time as to enable the irregular edge of the foot of the block to be presented to the cutter-head to be trimmed, the said cutters conforming to the edge of the said foot, in accordance with the demands of the pattern F. As the cutter reaches the point If, Fig. 1, and commences to cut the edge of the leg portions of the blanks, the end of the pin or stud G passes under a bridge, F, (a sectional detail of which is shown at Fig. 7, near the end of the patternplate,) and at the same time the roll 6 passes the corner 14 of the pusher and meets the shoulder or end 6. The roll having been placed, as just described, on the shelf between the corner 14 and shoulder e, the pusher N, in its farther forward movement by its action on the roll 6 will carry the auxiliary carriage forward longitudinally in the direction of the length of the crimping-form, with the leg portion in contact with the cutter-head, and at the same time the auxiliary carriage will draw the main carriage D with it on the ways A. The auxiliary carriage will be provided with a suitable scale or index to designate various sizes of boots or shoes, in order to indicate the point to which the holder L will be adjusted to enable the production of a form of the desired size.

Fig. 8 shows in cross-section a blank for a crimping-form as it will be left after having been once operated upon by the cutter-head of the old style of machine hereinbefore first referred to. In the said figure it will be noticed that but one bevel, 24., has been formed,

and that that has not been carried to the centerline, x ofthe blank, but thata square edge, 15, has been left where the blank rested against the gage which moved with the cutter and its shaft. When the blank, reversed or'turned the other side up, is again subjected to the action of the cutter, the. square corner 15 will be re duced by the bevel 17, Fig. 9; but even then it will be noticed that the-bevel 17 has not been carried to thecenter line, 00 but that a square edge, 15, is yet left, which, to bring it to a proper bevel, as in Fig. 5,- has to be subsequently shaved by hand.

Gutter-heads have been made to produce at one operation the edge shown at Fig. 9, but never, as I am aware, to bevel a crimpingform, as shown in Fig. 5.

It is obvious that I might use but one cutter and bevel one edge of the blank to its center line, and at another operation bevel the other edge to the said center line, or substantially so, and so avoid the final hand-shaving operation heretofore common; but it is cheaper and best to bevel both corners at the same time. 'When the cutter-head commencesto cut the leg of the blank, if the said head should be made to travel in the direction of the length of the blank and the carriageE remain at rest, the effect would be the same, and be within the scope'of my invention.

The machine is stopped, after the crimpingform is finished, by separating the nut ff I claim- 1. In a machine for the manufacture of crimping-forms, a rotary cutter-head, a main movement of the foot part of the blank, and 7 pin or stud cooperating therewith, combined with the main carriage and with a carriage mover or pusher, to operate both the auxiliary and main carriages, substantially as and for the purposes described.

3. In a machine for the manufacture of crimping-forms, the rotary cutter, and the main and auxiliary carriages and means to move them with relation to the said cutters and each other, combined with the adjustable holder to directly support the blank to be made into a crimping-form, whereby forms of different sizes may be made on the same machine, substantially as set forth.

4. In a machine for the manufacture of crimping-forms, the main and auxiliary carriages, and the pusher to move them, combined with a separable nut and rotating screw-shaft to operate the pusher at the proper times, substantially as set forth.

5. In a machine for the manufacture of crimping-forms,the main carriage and the auxiliary carriage, and means to move it thereon, and a pattern-plate, combined with a rotary cutter head, and with means to move backward and forward on the frame of the machine, substantially as and for the purposes dedescribed.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

J OHN WV. D. FIFIELD.

\Vitnesses:

J os. P. LIVERMORE, B. J. NoYns. 

